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ft_memmove.c
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ft_memmove.c
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_memmove.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: alsantia <[email protected]> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2021/02/10 12:14:38 by alsantia #+# #+# */
/* Updated: 2021/02/17 13:41:17 by alsantia ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
void *ft_memmove(void *dest, const void *src, size_t n)
{
unsigned char *ptr_dest;
unsigned const char *ptr_src;
ptr_dest = (unsigned char*)dest;
ptr_src = (unsigned const char*)src;
if (ptr_dest == NULL && ptr_src == NULL)
return (NULL);
if (src > dest)
ft_memcpy(dest, src, n);
else if (ptr_src < ptr_dest)
{
ptr_dest += n;
ptr_src += n;
while (n--)
*--ptr_dest = *--ptr_src;
}
return (dest);
}